Uv

uv is a Python project manager. It consolidates functionality of many different tools into 1 convenient CLI. The tool is written in Rust, and is extremely fast. It uses a custom dependency solver so dependency search/install from Pypi is faster, too.

The tool handles the following (and more):

• Project initialization
  • The uv init command initializes a directory path for developing Python programs.
  • It has --app and --lib options, scaffolding the directory for developing an app or library.
  • You can use the --bare option to create only a pyproject.toml file, which tracks the project’s build configuration & dependencies, but does not create any project scaffolding.
  • uv can also manage individual scripts with the --script option.
    • Initializes a single .py file, adding a docstring at the top of the file in accordance with PEP 723 - Inline script metadata.
• Virtual environments
  • When you run a uv command, a .venv/ directoy is created automatically.
  • Whenever you run a command prefixed with uv, i.e. uv python main.py, the tool will use the virtual environment’s Python/Pip.
• Manage your Python install, allowing you to install multiple versions scoped to individual uv-managed projects.
• Manage your project dependencies.
  • Can also install dev depenencies, which are available locally during development but are not packaged with the app.
• uvx runs a tool in an isolated environment, i.e. uvx ruff, without installing it or adding it to the project.
  • You can install tools to the system with uv tool install <tool-name>.